Changing Image Quality

You can edit code on OBS Console or make an API call to change the quality of a JPG or WebP image.

To save space, you can compress JPG images. Table 1 describes the parameters.

This operation is represented by quality.

**Table 1** Image compression parameters
Parameter	Value Description	Code Example
q	Relative quality of the image. The image is compressed to q% of the original. The value ranges from 1 to 100. Formula for compression: Target quality = Original quality × q% For example, if the original image quality is 100% and the relative quality is 80%, then the target image quality is 80%. If the original quality is 80% and the relative quality is 80%, then the target quality is 64%.	image/resize,w_100,h_100/quality,q_80
Q	Absolute quality of the image. The image is compressed into Q%. Q is irrelevant to and does not depend on the original image. The value ranges from 1 to 100. Formulas for compression: Original quality > Q%: target quality = Q% Original quality = Q%: target quality = original quality = Q% Original quality < Q%: target quality = original quality For example, if the original image quality is 100% and the absolute quality is 80%, then the target image quality is 80%. If the original quality is 70% and the absolute quality is 80%, then the target quality is 70%.	image/resize,w_100,h_100/quality,q_80